{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:K4BGVTTMXSFUQJGSZSSYO5IHQN","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"e7c8f62b91a92f67e2da648d3a57b376d391ab8c9a4fb87a550158552bfdde44","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-12T04:50:58Z","title_canon_sha256":"2d2981289dcf77c08b8b4dabd0d33a7036cf152e7833e2335556d25bc528aebb"},"schema_version":"1.0","source":{"id":"0805.1581","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.1581","created_at":"2026-05-18T02:15:52Z"},{"alias_kind":"arxiv_version","alias_value":"0805.1581v5","created_at":"2026-05-18T02:15:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.1581","created_at":"2026-05-18T02:15:52Z"},{"alias_kind":"pith_short_12","alias_value":"K4BGVTTMXSFU","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"K4BGVTTMXSFUQJGS","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"K4BGVTTM","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:f4fd11664edf48db554a852d31abef7f67435b2cceaad8cfb29872f7ef278c00","target":"graph","created_at":"2026-05-18T02:15:52Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present the results of a z>2.9 survey for HI 21-cm and molecular absorption in the hosts of radio quasars using the GMRT and the Tidbinbilla 70-m telescope. Previously published searches, which are overwhelmingly at redshifts of z<1, exhibit a 42% detection rate (31 out of 73 sources), and the inclusion of our survey yields a 17% detection rate (2 out of 12 sources) at z>2.5. We therefore believe that our high redshift selection is responsible for our exclusive non-detections, and find that at ultra-violet luminosities of >10e23 W/Hz, 21-cm absorption has never been detected. We also find t","authors_text":"C. R. Purcell, J. K. Webb, M. T. Murphy, M. T. Whiting, S. J. Curran, T. Wiklind","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-12T04:50:58Z","title":"A survey for redshifted molecular and atomic absorption lines - II. Associated HI, OH and millimetre lines in the z >~ 3 Parkes quarter-Jansky flat-spectrum sample"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.1581","kind":"arxiv","version":5},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f15b2271458d5e64447af3959273e57c142db2c2a0f28c0f7fd31cde0f2e8ac3","target":"record","created_at":"2026-05-18T02:15:52Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"e7c8f62b91a92f67e2da648d3a57b376d391ab8c9a4fb87a550158552bfdde44","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-12T04:50:58Z","title_canon_sha256":"2d2981289dcf77c08b8b4dabd0d33a7036cf152e7833e2335556d25bc528aebb"},"schema_version":"1.0","source":{"id":"0805.1581","kind":"arxiv","version":5}},"canonical_sha256":"57026ace6cbc8b4824d2cca5877507836268313d86b4edfcdbd6f00850760314","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57026ace6cbc8b4824d2cca5877507836268313d86b4edfcdbd6f00850760314","first_computed_at":"2026-05-18T02:15:52.867515Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:52.867515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vnTs/yj7tl3VJdZI6mmLHjuPvV2J4QlGjF7k59lwD1KXV0HXfV3fppna6FJUQmVmGQh882SfSy1/fJvYFIrCAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:52.867982Z","signed_message":"canonical_sha256_bytes"},"source_id":"0805.1581","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f15b2271458d5e64447af3959273e57c142db2c2a0f28c0f7fd31cde0f2e8ac3","sha256:f4fd11664edf48db554a852d31abef7f67435b2cceaad8cfb29872f7ef278c00"],"state_sha256":"330a71a9184e58c7fe27a9a076f7d6783f9639c3a6a8e2f6f80bc9802f5577a3"}